- Fix for possible unset uid/gid in toproto - Fix for default mtree style - Update libelf - Importing libexecinfo - Resynchronize GCC, mpc, gmp, mpfr - build.sh: Replace params with show-params. This has been done as the make target has been renamed in the same way, while a new target named params has been added. This new target generates a file containing all the parameters, instead of printing it on the console. - Update test48 with new etc/services (Fix by Ben Gras <ben@minix3.org) get getservbyport() out of the inner loop Change-Id: Ie6ad5226fa2621ff9f0dee8782ea48f9443d2091
100 lines
3 KiB
Groff
100 lines
3 KiB
Groff
.\" $NetBSD: inet6_getscopeid.3,v 1.3 2013/10/31 00:30:14 wiz Exp $
|
|
.\"-
|
|
.\" Copyright (c) 2013 The NetBSD Foundation, Inc.
|
|
.\" All rights reserved.
|
|
.\"
|
|
.\" This code is derived from software contributed to The NetBSD Foundation
|
|
.\" by Christos Zoulas.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
|
.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
|
.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
|
|
.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
.\" POSSIBILITY OF SUCH DAMAGE.
|
|
.\"
|
|
.\"
|
|
.Dd October 31, 2013
|
|
.Dt INET6_GETSCOPEID 3
|
|
.Os
|
|
.\"
|
|
.Sh NAME
|
|
.Nm inet6_getscopeid ,
|
|
.Nm inet6_putscopeid
|
|
.Nd IPv6 scope id encoding and decoding functions
|
|
.\"
|
|
.Sh SYNOPSIS
|
|
.In netinet/in.h
|
|
.Ft void
|
|
.Fn inet6_getscopeid "struct sockaddr_in6 *sin6" "int flags"
|
|
.Ft void
|
|
.Fn inet6_putscopeid "struct sockaddr_in6 *sin6" "int flags"
|
|
.\"
|
|
.Sh DESCRIPTION
|
|
These functions implement a KAME-specific extension that encodes and
|
|
decodes the scope id inside in the 3rd and 4th byte of the address,
|
|
for link-local, site-local, and multicast-link-local addresses.
|
|
The scope id helps deciding which interface is used for packets of
|
|
that type.
|
|
.Pp
|
|
Typically those two bytes are
|
|
.Dv 0
|
|
for these kinds of addresses.
|
|
The scope id is stored in network byte order.
|
|
.Pp
|
|
The
|
|
.Fn inet6_getscopeid
|
|
function retrieves the scope id from the 3rd and the 4th address bytes
|
|
(from the
|
|
.Va sin6_addr
|
|
member of
|
|
.Fa sin6 ) ,
|
|
and sets the
|
|
.Ft sin6_scope_id
|
|
from them.
|
|
It then clears the two address bytes.
|
|
.Pp
|
|
The
|
|
.Fn inet6putscopeid
|
|
function stores the scope id found in
|
|
.Ft sin6_scope_id
|
|
into the 3rd and 4th byte of the address
|
|
(into the
|
|
.Va sin6_addr
|
|
member of
|
|
.Fa sin6 ) .
|
|
It then clears the
|
|
.Va sin6_scope_id
|
|
member of
|
|
.Fa sin6 .
|
|
.Pp
|
|
The
|
|
.Fa flags
|
|
argument controls for which addresses this action is performed.
|
|
It
|
|
can be a combination of:
|
|
.Bl -bullet
|
|
.It
|
|
.Dv INET6_IS_ADDR_LINKLOCAL
|
|
.It
|
|
.Dv INET6_IS_ADDR_MC_LINKLOCAL
|
|
.It
|
|
.Dv INET6_IS_ADDR_SITELOCAL
|
|
.El
|
|
.Sh HISTORY
|
|
These functions first appeared in
|
|
.Nx 7.0 .
|